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Description
There may be some indexes that are unused, or redundant.
For instance, an index for (a) and and index for (a,b) are redundant, since (a,b) can be used for (a)
Additional unnecessary indexes add load for nothing.
There may be some indexes that are unused, or redundant.
For instance, an index for (a) and and index for (a,b) are redundant, since (a,b) can be used for (a)
Additional unnecessary indexes add load for nothing.